A305838 - cp's OEIS frontend

A305838 Triangle read by rows: T(0,0)= 1; T(n,k)= T(n-1,k) + 5*T(n-2,k-1) for k = 0..floor(n/2); T(n,k)=0 for n or k < 0.

n	a(n)
0	1
1	1
2	1
3	5
4	1
5	10
6	1
7	15
8	25
9	1
10	20
11	75
12	1
13	25
14	150
15	125
16	1
17	30
18	250
19	500
20	1
21	35
22	375
23	1250
24	625
25	1
26	40
27	525
28	2500
29	3125
30	1
31	45
32	700
33	4375
34	9375
35	3125
36	1
37	50
38	900
39	7000
40	21875
41	18750
42	1
43	55
44	1125
45	10500
46	43750
47	65625
48	15625
49	1
50	60
51	1375
52	15000
53	78750
54	175000
55	109375

[1, 1, 1, 5, 1, 10, 1, 15, 25, 1, 20, 75, 1, 25, 150, 125, 1, 30, 250, 500, 1, 35, 375, 1250, 625, 1, 40, 525, 2500, 3125, 1, 45, 700, 4375, 9375, 3125, 1, 50, 900, 7000, 21875, 18750, 1, 55, 1125, 10500, 43750, 65625, 15625, 1, 60, 1375, 15000, 78750, 175000, 109375]

cp's OEIS Frontend

A305838 Triangle read by rows: T(0,0)= 1; T(n,k)= T(n-1,k) + 5*T(n-2,k-1) for k = 0..floor(n/2); T(n,k)=0 for n or k < 0.

Table of values

List of values